APA (7th ed.) Citation

Card, O. S. (1985). Ender's game. Century Pub..

Chicago Style (17th ed.) Citation

Card, Orson Scott. Ender's Game. London: Century Pub., 1985.

MLA (9th ed.) Citation

Card, Orson Scott. Ender's Game. Century Pub., 1985.

Warning: These citations may not always be 100% accurate.